1201
Learn Vim motions with an ice-cream van
A free browser game that teaches real Vim motions. The van is your cursor, the town is your text. Serve every customer under par.
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 1,422 posts.
1202
Tracking down a Zsh history data loss bug
For many years, I sometimes discovered that commands I was sure I had run were no longer present in my Z shell history file (~/.zsh_history). In this article, I will show you how I tracked down the bug. Spoiler: ultimately, patching Zsh to make it crash loudly and analyzing the crash’s core dump was the winning…
1203
Lil' Fun Langs
a pungent monad odor that attracts mathochists
1204
Decompiling Xbox games using PDB debug info
In the world of matching decompilation, projects use a tool which consumes an input binary and lifts objects for comparison and linkage.
1205
How Do I Profile eBPF Code?
If we are running any eBPF workload or writing eBPF code, we want to measure its performance impact, and in this post we will demonstrate an example of how to do it. In this example, our goal is to measure the performance of file open operations, one of the most critical functions in the OS. Our code used file open…
1206
C constructs that still don't work in C++
A 2026 sequel to C Constructs That Don't Work in C++: what still breaks, what C++20 changed, and what C23 changed.
1207
We are rebuilding Monica
We are rebuilding Monica from scratch, and this new series will document how.
1208
Dear Software Makers
Marques Brownlee just released a video essay titled “Dear YouTube” . I loved it. He talks about how YouTube is going to start shipping this new feature where…
1209
DSLs Enable Reliable Use of LLMs
Why Domain-Specific Languages and good abstractions make LLM code generation reliable and reviewable.
1210
Highlighting My Code Based on How Much I Care
I never questioned why code should be highlighted until I tried to make my own theme.
1211
Why we built our own background agent
The craft of engineering is rapidly changing. We built our own coding agent to accelerate faster. Inspect is now open to teams outside Ramp through early access.
1212
The Shape of Inequalities
…symmetry isn’t just a preference for “pretty” shapes. Contents Introduction The HM-GM-AM-QM Inequality The two circles The Semicircle The Container The 3D container The Sum of Squares Inequality Nesbitt’s Inequality Conclusion Introduction While I was randomly browsing the web, I came across this nice picture: Roland…
1213
The Token Compression Illusion: Why I'm Skeptical of RTK
RTK promises dramatic token savings for coding agents, but raw terminal compression is not the same as cheaper, safer, or more accurate software engineering.
1214
The largest number representable in 64 bits
This post is a rewrite of my earlier blog post from Nov 2023 with new insights and updates.
1215
Rust-lang/rust is adopting an LLM policy
Want to follow along with Rust development? Curious how you might get involved? Take a look!
1216
Signing data structures the wrong way
Domain separation bugs have bitten Bitcoin, Ethereum, TLS, and AWS. Snowpack solves this by embedding random domain separators directly in the IDL.
1217
Rust Threads on the GPU
At VectorWare , we are building the first GPU-native software company . Today, we are excited to announce that we can successfully use Rust's std::thread on the GPU. This milestone marks a significant step towards our vision of enabling developers to write complex, high-performance applications that leverage the full…
1218
Spatial languages: Writing code in 2D
Writing code in 2D: a spatial programming language with vertical operands, quantum uncomputation puzzles, and a 3-bit adder in a single 2D expression.
1219
Io_uring Without Readahead
Someone opened a PR to implement readahead in Turso. It was a throwaway implementation, but a good excuse to measure io_uring and understand more about it.
1220
Reproducing DeepSeek's MHC: When Residual Connections Explode
DeepSeek replaced standard residuals with massive Hyper-Connections, and then watched them explode. I reproduced the 9x signal amplification to understand their fix: the Sinkhorn-Knopp algorithm. Part 1 of 2.
1221
Training a 3.8B LLM to 0.384 CORE for $998
A 3.8B model pretrained from scratch to 0.384 CORE on 65B tokens in 43 hours, for $998.
1222
Floating-Point Printing and Parsing Can Be Simple and Fast
A floating point number f has the form f = m · 2 e where m is called the mantissa and e is a signed integer exponent . We like to read numbers scaled by powers of ten, not two, so computers need algorithms to convert binary floating-point to and from decimal text. My 2011 post “ Floating Point to Decimal Conversion is…
1223
Unsigned sizes: A five year mistake
C3 is the ergonomic, safe evolution of C. Familiar syntax, full ABI compatibility, optionals, slices, contracts and zero-cost abstractions.
1224
No LLM Code in Dependencies
I've spent about 100 hours of work over the past month to make sure git-annex can build without dependencies that contain LLM generated code. At least so far.
1225
A Trampoline
I didn’t want to buy a trampoline. It wasn’t the money.
1226
Claude's Load-Bearing Seams
Now that I have the full picture, the load-bearing seams are much clearer. They are not merely incidental details around the edges. They materially change how the entire situation needs to be understood, and that is the smoking gun I should have recognized earlier.Claude's load-bearing seams
1227
Try text scaling support in Chrome Canary
If you have Chrome Canary installed with the 'Experimental Web Platform features' flag enabled, you can now try out a new HTML meta tag:
1228
Building Principia for Windows XP
Back in the day when Principia originally released for Windows in 2014, the game would run on versions as far back as Windows XP. Given that Principia 1.4 was released while Windows XP still had mainstream support, this of course made sense at the time, and there was no real reason not to support it given that the…
1229
A New Typst Template for Pandoc (2025)
Last summer I spent a lot of time with Typst (at that point v0.11) and Pandoc, working on a flexible and reusable workflow to typeset markdown-formatted articles to PDF. I designed a Pandoc template for Typst that would do nice things with layout and typography, and I posted about that here .
1230
Rust's derive often implies inline
In Rust, one of the most common ways to implement core traits (like Debug , Display , and Clone ) is to #[derive(...)] them, e.g.: